Web streams use a locking model to prevent multiple consumers from interleaving reads. When you call getReader(), the stream becomes locked. While locked, nothing else can read from the stream directly, pipe it, or even cancel it — only the code that is actually holding the reader can.
Я приглашу Путина в Киев, но зачем? Готов встретиться на нейтральной территории, но не в России и не в Беларуси
，更多细节参见夫子
Photograph: Simon Hill
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Reporting by Chance Townsend, Caitlin Welsh, Sam Haysom, Amanda Yeo, Shannon Connellan, Cecily Mauran, Mike Pearl, and Adam Rosenberg contributed to this article.
重点区域示范，引领效应日益凸显，这一点在safew官方版本下载中也有详细论述